Human Heart Anatomy Diagram - Chambers, Valves, and Blood Flow Explained #1499046 (License: Personal Use)

This medical illustration depicts the human heart in cross-section, highlighting four chambers (right atrium, right ventricle, left atrium, left ventricle), four valves (tricuspid, pulmonary, mitral, aortic), and key vessels (superior/inferior vena cava, pulmonary arteries/veins, aorta). Blue arrows indicate deoxygenated blood flow from body to lungs, while red arrows show oxygenated blood returning from lungs to body. Labels also distinguish oxygenated vs. unoxygenated blood regions.

Used in educational settings-biology textbooks, medical training modules, health websites-to teach cardiovascular physiology; matches user intent for learning heart structure/function or preparing study materials.